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comparison src/share/vm/utilities/taskqueue.cpp @ 1665:a93a9eda13f7

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6962947: shared TaskQueue statistics Reviewed-by: tonyp, ysr
author jcoomes
date Fri, 16 Jul 2010 21:33:21 -0700
parents b2a00dd3117c
children 5f429ee79634
comparison
equal deleted inserted replaced
1657:1a1ce2076047 1665:a93a9eda13f7
28 #ifdef TRACESPINNING 28 #ifdef TRACESPINNING
29 uint ParallelTaskTerminator::_total_yields = 0; 29 uint ParallelTaskTerminator::_total_yields = 0;
30 uint ParallelTaskTerminator::_total_spins = 0; 30 uint ParallelTaskTerminator::_total_spins = 0;
31 uint ParallelTaskTerminator::_total_peeks = 0; 31 uint ParallelTaskTerminator::_total_peeks = 0;
32 #endif 32 #endif
33
34 #if TASKQUEUE_STATS
35 const char * const TaskQueueStats::_names[last_stat_id] = {
36 "qpush", "qpop", "qpop-s", "qattempt", "qsteal", "opush", "omax"
37 };
38
39 void TaskQueueStats::print_header(unsigned int line, outputStream* const stream,
40 unsigned int width)
41 {
42 // Use a width w: 1 <= w <= max_width
43 const unsigned int max_width = 40;
44 const unsigned int w = MAX2(MIN2(width, max_width), 1U);
45
46 if (line == 0) { // spaces equal in width to the header
47 const unsigned int hdr_width = w * last_stat_id + last_stat_id - 1;
48 stream->print("%*s", hdr_width, " ");
49 } else if (line == 1) { // labels
50 stream->print("%*s", w, _names[0]);
51 for (unsigned int i = 1; i < last_stat_id; ++i) {
52 stream->print(" %*s", w, _names[i]);
53 }
54 } else if (line == 2) { // dashed lines
55 char dashes[max_width + 1];
56 memset(dashes, '-', w);
57 dashes[w] = '\0';
58 stream->print("%s", dashes);
59 for (unsigned int i = 1; i < last_stat_id; ++i) {
60 stream->print(" %s", dashes);
61 }
62 }
63 }
64
65 void TaskQueueStats::print(outputStream* stream, unsigned int width) const
66 {
67 #define FMT SIZE_FORMAT_W(*)
68 stream->print(FMT, width, _stats[0]);
69 for (unsigned int i = 1; i < last_stat_id; ++i) {
70 stream->print(" " FMT, width, _stats[i]);
71 }
72 #undef FMT
73 }
74 #endif // TASKQUEUE_STATS
33 75
34 int TaskQueueSetSuper::randomParkAndMiller(int *seed0) { 76 int TaskQueueSetSuper::randomParkAndMiller(int *seed0) {
35 const int a = 16807; 77 const int a = 16807;
36 const int m = 2147483647; 78 const int m = 2147483647;
37 const int q = 127773; /* m div a */ 79 const int q = 127773; /* m div a */